1431124321 has 16 divisors (see below), whose sum is σ = 1579273920. Its totient is φ = 1286046720.

The previous prime is 1431124313. The next prime is 1431124337. The reversal of 1431124321 is 1234211341.

It is a cyclic number.

It is not a de Polignac number, because 1431124321 - 2³ = 1431124313 is a prime.

It is a super-2 number, since 2×1431124321² = 4096233644315422082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1431124292 and 1431124301.

It is not an unprimeable number, because it can be changed into a prime (1431124301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 536890 + ... + 539548.

It is an arithmetic number, because the mean of its divisors is an integer number (98704620).

Almost surely, 2^1431124321 is an apocalyptic number.

1431124321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1431124321 is a deficient number, since it is larger than the sum of its proper divisors (148149599).

1431124321 is a wasteful number, since it uses less digits than its factorization.

1431124321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216.

The product of its digits is 576, while the sum is 22.

The square root of 1431124321 is about 37830.2038191707. The cubic root of 1431124321 is about 1126.9183588085.

Adding to 1431124321 its reverse (1234211341), we get a palindrome (2665335662).

The spelling of 1431124321 in words is "one billion, four hundred thirty-one million, one hundred twenty-four thousand, three hundred twenty-one".